<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <!-- 添加角色按钮区域 -->
      <el-row>
        <el-col>
          <el-button type="primary">添加角色</el-button>
        </el-col>
      </el-row>
        <!-- 角色列表区域 -->
      <el-table :data="rolelist" border stripe max-height="550" style="width:100%">
        <!-- 展开列 -->
        <el-table-column type="expand">
             <template slot-scope="props">
               <el-row :class="['bdbottom',i1==0?'bdtop':'','vcenter']" v-for="(item1,i1) in props.row.children"
                :key="item1.id">
                   <el-col :span="5">
                       <el-tag type="primary" closable @close="handleClose(props.row,item1.id)">{{item1.authName}}</el-tag>
                       <i class="el-icon-caret-right"></i>
                   </el-col>
                       <el-col :span="19" >
                           <el-row  :class="[i2==0?'':'bdtop','vcenter']"  v-for="(item2,i2) in item1.children" :key="item2.id">
                               <el-col :span="6">
                                    <el-tag type="warning" closable @close="handleClose(props.row,item2.id)">{{item2.authName}}</el-tag>
                                    <i class="el-icon-caret-right"></i>
                               </el-col>
                               <el-col :span="18">
                                    <el-tag type="success" v-for="(item3) in item2.children" :key='item3.id'
                                    closable @close="handleClose(props.row,item3.id)">{{item3.authName}}</el-tag>
                               </el-col>
                           </el-row>
                       </el-col>
                   </el-row>
             </template>
        </el-table-column>
            <!-- 索引列 -->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button size="mini" type="primary" icon="el-icon-edit">编辑</el-button>
            <el-button size="mini" type="danger" icon="el-icon-delete">删除</el-button>
            <el-button size="mini" type="warning" icon="el-icon-setting" @click="showSetRightDialog(scope.row)">分配权限</el-button>
          </template>
        </el-table-column></el-table>
    </el-card>
    
    <el-dialog title="分配权限" :visible.sync="dialogTreeVisible" @close="setRightDialogClosed">
   <el-tree
  :data="rightsList"
  :props="treeProps"
  show-checkbox
  default-expand-all
  node-key="id"
  ref="treeRef"
  :default-checked-keys="defKeys"
 >
</el-tree>
  <div slot="footer" class="dialog-footer">
    <el-button @click="dialogTreeVisible = false">取 消</el-button>
    <el-button type="primary" @click="allotRights">确 定</el-button>
  </div>
</el-dialog>

    </div>
</template>

<script>
import request from '../../api/index'
export default {
    name:'Role',
    data(){
        return {
            rolelist:[],
            dialogTreeVisible:false,
            roleId:'',
            rightsList:[],
            treeProps:{
              label:'authName',
              children:'children'
            },
            defKeys:[]//默认选中的权限
        }
    },
    created() {
        this.getRolesList()
    },
    methods:{
          // 获取所有角色的列表
    async getRolesList() {
      const { data: res } = await request({url:'/roles',method:'get'})
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }

      this.rolelist = res.data

      console.log(this.rolelist)
    },
    async handleClose(role,id){
      let confirmResult=await this.$confirm('此操作将永久删除该权限, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err);
        if(confirmResult!='confirm'){
          this.$message.info("已取消删除")
        }
        else{
          const {data:res}=await request({url:`/roles/${role.id}/rights/${id}`,method:'delete'});
              if (res.meta.status !== 200) {
              return this.$message.error('删除权限失败！')
      }

      // this.getRolesList()
         role.children = res.data
        }
    },
   async showSetRightDialog(role){
         this.roleId = role.id
      // 获取所有权限的数据
      const { data: res } = await request({url:'/rights/tree',method:'get'})

      if (res.meta.status !== 200) {
        return this.$message.error('获取权限数据失败！')
      }

      // 把获取到的权限数据保存到 data 中
      this.rightsList = res.data
      console.log(this.rightsList)
     // 递归获取三级节点的Id
      this.getLeafKeys(role, this.defKeys)
      this.dialogTreeVisible=true

     
   },
   getLeafKeys(node,arr){
     if(!node.children){
       return arr.push(node.id)
     }
    node.children.forEach(item=>this.getLeafKeys(item,arr))
   },
   setRightDialogClosed(){
     this.defKeys=[]//关闭时清空
   },
  async allotRights(){

    const keys=[...this.$refs.treeRef.getCheckedKeys(),
                ...this.$refs.treeRef.getHalfCheckedKeys()];
                console.log(keys)
    const keys_str=keys.join(',');
     const { data: res } = await request({url: `/roles/${this.roleId}/rights`,method:'post',data:{rids:keys_str}})
    console.log(res)

      if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败！')
      }

      this.$message.success('分配权限成功！')
      this.getRolesList()
      this.dialogTreeVisible = false

  }
    }

}
</script>

<style lang='less' scoped>
.el-card{
    margin-top:20px;
}
.el-tag {
  margin: 7px;
}

.bdtop {
  border-top: 1px solid #eee;
}

.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter{
    display: flex;
    align-items: center;
}
</style>